I see your point but isn't easy to understand that the reason tech companies and YC try to help the ACLU is because charity begins at home? Preventing engineers

I see your point but isn't easy to understand that the reason tech companies and YC try to help the ACLU is because charity begins at home? Preventing engineers from working at these companies because of their national origin affects them more than police violence against black people. There surely are other causes more worthy of support outside the US that he did not mention.